Time Electronics User Manual
5051 Plus and 7051 Plus Multifunction Calibrators v2.1
xx51+ Multifunction Calibrators Page 12 of 64
6. 5051 Plus
6.1. 5051 Plus Important Information
Warning: The 5051 is a heavy instrument and care should be taken when lifting to
prevent injury. Use both handles to carry.
Warning: If this equipment is used in a manner not specified by the manufacturer, the
protection provided by the equipment may be impaired. This instrument must be
connected to a grounded outlet.
This instrument is to be serviced by trained personnel only.
Disconnect mains supply before removing cover or replacing fuses.
For operations involving removal of the 5051’s cover, users should be aware that certain
sections of the circuitry carry high voltages, which are hazardous. Very high currents
causing burns can also be generated if certain terminals are inadvertently shorted.
Locating the Instrument.
For bench-top use, make sure the instrument is located on a flat, firm surface. The instrument is fitted
with four plastic feet. The two front feet can be adjusted to ‘tilt’ the instrument.
A 10 cm area of free space is recommended at the rear of the instrument. Do not obstruct the fan
inlet on the rear of the unit. Do not obstruct any exhaust outlets on the bottom of the instrument.
Please retain the shipping case for future use e.g. transport of 5051 for calibration.
Powering the Instrument.
Before connecting power to the 5051 for the first time, please ensure that it has been set to accept the
correct voltage. 100/120V 60Hz operation is an option and specified on ordering.
The supply power is connected via a standard IEC Euro connector on the rear panel. The standard
voltage supply is 220/230V 50Hz. There two protection fuses mounted on the rear panel next to the
IEC connector, both are 3.15A slow blow.
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